Lake effect snow will continue downwind of the Lower Great Lakes through Wednesday, with accumulations of 4 to 8 inches possible for portions of Upstate New York and the Adirondacks. Gusty winds and dry conditions will result in critical fire weather conditions in the Southwest and Southern Plains Wednesday through Friday. Red Flag Warnings have been issued. Read More >
Washington CWSU
Center Weather Service Unit
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Temperature Conversion |
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| Enter a number then click on the the conversion button. | ||||
| Fahrenheit (o F) |
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| Celsius (o C) |
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Wind Speed Calculations |
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| Enter a speed into any blank to convert to all other wind speeds. | ||||||
| mph knots m/sec km/hr | ||||||
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Wind Chill Calculation |
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| Enter the temperature in degrees Fahrenheit and wind speed in mph, then click on the Calculate WC to compute the windchill index. | ||||||
| Temp (o F) |
Wind (mph) |
Index |
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Relative Humidity Calculation |
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| Enter the air temperature and the dew point in degrees Fahrenheit, then click on the Calculate RH to compute the relative humidity. | ||||||
| Temp (o F) |
Dew Point |
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Heat Index Calculations |
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| Enter the temperature in degrees Fahrenheit and relative humidity (RH) in percent (without the % sign), or the Dew Point (Tdp). Then click on the Calculate HI to compute the heat index (HI). | |||||||
| Temp (o F) |
RH | HI |
Tdp |
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OR |
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| Temp (o F) |
Tdp | HI | RH | ||||
US Dept of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
Washington CWSU
Washington ARTCC Center Weather Service Unit
825 East Market Street
Leesburg, VA 20176-4496
703-771-3480
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